Rename enonce and exercice to assignment and exercise

ExpressAPI/assets/exercise_gitlab_ci.yml

ExpressAPI/package.json

...nce_and_exercice_to_assignment_and_exercise/migration.sql

ExpressAPI/prisma/schema.prisma

ExpressAPI/src/config/Config.ts

ExpressAPI/src/controllers/Session.ts

ExpressAPI/src/helpers/DojoValidators.ts

ExpressAPI/src/managers/AssignmentManager.ts

ExpressAPI/src/managers/EnonceManager.ts

ExpressAPI/src/managers/ExerciseManager.ts

ExpressAPI/src/middlewares/ParamsCallbackManager.ts

ExpressAPI/src/middlewares/SecurityMiddleware.ts

ExpressAPI/src/routes/ApiRoutesManager.ts

ExpressAPI/src/routes/AssignmentRoutes.ts

ExpressAPI/src/routes/ExerciseRoutes.ts

ExpressAPI/src/routes/GitlabRoutes.ts

ExpressAPI/src/shared

ExpressAPI/src/types/DatabaseTypes.ts

ExpressAPI/src/types/SecurityCheckType.ts

ExpressAPI/src/types/express/index.d.ts